How to design a RF power Amplifier with Specification of 200W, 1MHz - 20 MHz RF Amplifier

Papabravo

Joined Feb 24, 2006
21,228
Aye! $40K is a bit 'dear' for a signal generator:eek: --- that sounds like an 'industry targeted' price... Have you tried 'pulling' a few model NOs then searching Ebay?

Best regards
HP:)
 
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I was thinking of using an amplifier for amateur radio use like the following
http://www.elecraft.com/KPA500/KPA500.htm
The cost is in the neighborhood of $3000
and the documentation is very complete and downloadable in PDF form.
It is true that is designed to operate only on certain bands, but it might give you a starting point.
Here is another company
http://www.ameritron.com/
And another one
http://www.rkrdesignsllc.com/
Good idea!:) -- Additionally you may wish to look at Ameritron's ATR-30 2kW 'transmatch/atenna tuner' (i.e. adjustable impedance matching network)

Best regards and good luck!:)
HP
 

alfacliff

Joined Dec 13, 2013
2,458
we use simiolar amps here in systems for non destructive test of composite aircraft parts, the ultra sonic energy is supplied by 8 irf 840's iin push pull paralell to a piezo transducer and the ultra sonic energy is dirrectede to the part under test by a jet of water. dont really have many tubes around here any more.
the ultrasonic amp uses about 300 volts dc as a supply for the mosfets.
 

Thread Starter

Basudeb Behera

Joined Jun 11, 2015
6
I have a signal generator with specifications of 1Hz-15MHz and voltage rating of 10 Vp-p. How can I use this resource to generate the same 10 MHz and Voltage of 100 V using this available resource. Can I use HF transformer to multiply the voltage source?
 
I have a signal generator with specifications of 1Hz-15MHz and voltage rating of 10 Vp-p. How can I use this resource to generate the same 10 MHz and Voltage of 100 V using this available resource. Can I use HF transformer to multiply the voltage source?
Of course, however, assuming you're referring to a 'standard' signal generator, you'll have very little power to start with (<20 dBm [100mw]) and even less following transformation losses...

Best regards
HP
 
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Thread Starter

Basudeb Behera

Joined Jun 11, 2015
6
Of course, however, assuming you're referring to a 'standard' signal generator, you'll have very little power to start with (<20 dBm [100mw]) and even less following transformation losses...

Best regards
HP
No Hypatia, actually to get a perfect and required amplitude, the minimum required voltage supply is nearly 100V. Thats why I am facing the problem of generating 100 V and 10 MHz.
So if any one can suggest me how can I use the available resource and get the required specifications.
 
No Hypatia, actually to get a perfect and required amplitude, the minimum required voltage supply is nearly 100V. Thats why I am facing the problem of generating 100 V and 10 MHz.
So if any one can suggest me how can I use the available resource and get the required specifications.
Perhaps you misunderstood my response? -- Although the output amplitude of a standard signal generator may be transformed to 100V, the power will remain extremely low and, hence, inapplicable to your purposes --- IOW while the (post transformation) amplitude may be 100V, it will drastically decrease upon (scant) loading...

So if any one can suggest me how can I use the available resource and get the required specifications.
If you wish to use the signal generator you will need follow it with an active amplifier (do pardon the redundancy) -- To render a rather strained expression; "there's no such thing as a free lunch":cool:

Quantitative advice requires quantitative data -- For starters; how much power (or current) is required to test the device?

Best regards
HP:)
 
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You might be able to use an Apex PA107DP to boost the voltage and power. Pricy though. $413 each. :eek:
https://www.apexanalog.com/apex-products/pa107/
https://octopart.com/search?q=PA107DP&start=0

An evaluation kit is available for about $185. Obviously you have to supply your own PA107DP at that price...
http://www.digikey.com/product-deta...4016?WT.z_cid=ref_octopart_dkc_buynow&site=us
If you ask real nicely you might get a Rep to 'sample' one out to you!:)

Best regards
HP
 
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Trouble with the vintage PS/Business Motorola gear (including the mobile units e.g. Motrac, Mocom, Mitrek, etc...) lies in the fact that the minimum frequency of operation (even for 'low band' equipment) falls in the 6 meter (i.e. 50MHz) area... Too bad! Those rigs are bullet proof! :cool:

Best regards
HP

PS: (Re: Mocom -- Surely those SOE RF power PNPs are collectable? Perhaps I should fashion necklaces of them for sale at Dayton? :D)
 
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BReeves

Joined Nov 24, 2012
410
Trouble with the vintage PS/Business Motorola gear (including the mobile units e.g. Motrac, Mocom, Mitrek, etc...) lies in the fact that the minimum frequency of operation (even for 'low band' equipment) falls in the 6 meter (i.e. 50MHz) area... Too bad! Those rigs are bullet proof! :cool:

Best regards
HP

PS: (Re: Mocom -- Surely those SOE RF power PNPs are collectable? Perhaps I should fashion necklaces of them for sale at Dayton? :D)
Ya, I know, just thinking for 200 bucks he would get the power supply and most of the components he needed. Been a while since I rebuilt a power amp but am thinking it could be made to work. The exciter and other components wouldn't do him much good other than cannibalizing for parts.
 
How could anybody think you were born with the silver spoon!;)
I stand by my sentiment! Parsimony is the antithesis of alacrity and as inexcusable as all (other) 'species' of hypocrisy! --- That said, in the rare case that someone is literally not possessed of the required funds -- by all means - 'kludge away'!!!:):cool:



Best regards
HP
 
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